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Gene. 2003 Oct 2;315:33-41.

Egr-1 target genes in human endothelial cells identified by microarray analysis.

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Department of Biochemistry, Cardiovascular Research Institute, Morehouse School of Medicine, 720 Westview Drive SW, MEB 1345, Research Wing, Room 215, Atlanta, GA 30310, USA.


Early growth response factor 1 (Egr-1) is a key transcriptional factor to mediate gene expression after vascular injury. To better understand the role of Egr-1 in vasculature, we globally profiled Egr-1 target genes in human endothelial cells using adenoviral gene transfer and Affymetrix oligonucleotide-based microarray technology. More than 300 genes regulated by >/=3-fold with Egr-1 overexpression were identified and, partially, confirmed by Northern and Western blotting, including genes for transcriptional regulators, signaling proteins, cell cycle regulatory proteins, growth factors, and cytokines. Among them, thymus-expressed chemokine (TECK) and IP-30 were dramatically induced by Egr-1, but TNFalpha-related apoptosis inducing ligand (TRAIL) was significantly repressed by Egr-1, suggesting that Egr-1 is a key mediator of inflammation and apoptosis in vascular cells. These data provide novel Egr-1 target genes and contribute to the understanding of the role of Egr-1 in vasculature.

[Indexed for MEDLINE]

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